How to access usercontrol from mainwindow

Question

1.00/5 (1 vote)

See more:

Hi all,

I would like to ask you, how can I access my usercontrol from MainWindow?

For accessing to MainWindow I'm using :

VB

Dim mw As MainWindow = DirectCast(Application.Current.MainWindow, MainWindow)

I need this because I would like to select particular TabItem from my UserControl. (tabitem.IsSelected= true)

Thank you in advance

Posted 23-Jul-14 4:51am

LordVovin

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Accepted Answer · 2014-07-23T07:43:00

You are doing everything wrong. You don't need to access main window this way. Instead, you should better create your own application class, derived from Application and keep a reference to the main window in it. Moreover, you have to keep it as the member of the type MainWindow, not Window, to avoid casting in the code using the window.

Same thing is about your user control. Apparently, you add/insert the instance of your control in some other UIElement (Window or anything else). Hence, that element already has access to it. In particular, if you do it in XAML, add the x:Name attribute to the instance of your control. This will generate VB.NET code with a window member under the name you define. Use this member.

—SA